<template>
	<view class="u-keyboard" @touchmove.stop.prevent>
		<view class="u-keyboard-grids">
			<block>
				<view class="u-keyboard-grids-item" v-for="(group, i) in abc ? EngKeyBoardList : areaList" :key="i">
					<view :hover-stay-time="100" @tap="carInputClick(i, j)" hover-class="u-carinput-hover" class="u-keyboard-grids-btn" v-for="(item, j) in group" :key="j">
						{{ item }}
					</view>
				</view>
				<view @touchstart="backspaceClick" @touchend="clearTimer" :hover-stay-time="100" class="u-keyboard-back" hover-class="u-hover-class">
					<u-icon :size="38" name="backspace" :bold="true"></u-icon>
				</view>
				<view :hover-stay-time="100" class="u-keyboard-change" hover-class="u-carinput-hover" @tap="changeCarInputMode">
					<text class="zh" :class="[!abc ? 'active' : 'inactive']">中</text>
					/
					<text class="en" :class="[abc ? 'active' : 'inactive']">英</text>
				</view>
			</block>
		</view>
	</view>
</template>

<script>
export default {
	props: {
		// 是否打乱键盘按键的顺序
		random: {
			type: Boolean,
			default: false
		}
	},
	data() {
		return {
			// 车牌输入时，abc=true为输入车牌号码，bac=false为输入省份中文简称
			abc: false
		};
	},
	computed: {
		areaList() {
			let data = [
				'京',
				'沪',
				'粤',
				'津',
				'冀',
				'豫',
				'云',
				'辽',
				'黑',
				'湘',
				'皖',
				'鲁',
				'苏',
				'浙',
				'赣',
				'鄂',
				'桂',
				'甘',
				'晋',
				'陕',
				'蒙',
				'吉',
				'闽',
				'贵',
				'渝',
				'川',
				'青',
				'琼',
				'宁',
				'藏',
				'港',
				'澳',
				'新',
				'使',
				'学'
			];
			let tmp = [];
			// 打乱顺序
			if (this.random) data = this.$u.randomArray(data);
			// 切割成二维数组
			tmp[0] = data.slice(0, 10);
			tmp[1] = data.slice(10, 20);
			tmp[2] = data.slice(20, 29);
			tmp[3] = data.slice(29, 35);
			return tmp;
		},
		EngKeyBoardList() {
			let data = [
				1,
				2,
				3,
				4,
				5,
				6,
				7,
				8,
				9,
				0,
				'Q',
				'W',
				'E',
				'R',
				'T',
				'Y',
				'U',
				'I',
				'O',
				'P',
				'A',
				'S',
				'D',
				'F',
				'G',
				'H',
				'J',
				'K',
				'L',
				'Z',
				'X',
				'C',
				'V',
				'B',
				'N',
				'M'
			];
			let tmp = [];
			if (this.random) data = this.$u.randomArray(data);
			tmp[0] = data.slice(0, 10);
			tmp[1] = data.slice(10, 20);
			tmp[2] = data.slice(20, 30);
			tmp[3] = data.slice(30, 36);
			return tmp;
		}
	},
	methods: {
		// 点击键盘按钮
		carInputClick(i, j) {
			let value = '';
			// 不同模式，获取不同数组的值
			if (this.abc) value = this.EngKeyBoardList[i][j];
			else value = this.areaList[i][j];
			this.$emit('change', value);
		},
		// 修改汽车牌键盘的输入模式，中文|英文
		changeCarInputMode() {
			this.abc = !this.abc;
		},
		// 点击退格键
		backspaceClick() {
			this.$emit('backspace');
			 clearInterval(this.timer); //再次清空定时器，防止重复注册定时器
		      this.timer = setInterval(() => {
		    	  this.$emit('backspace');
		      }, 250);
		},
		clearTimer() {
			clearInterval(this.timer);
		},
	}
};
</script>

<style lang="scss" scoped>
.u-keyboard-grids {
	background: rgb(215, 215, 217);
	padding: 24rpx 0;
	position: relative;
}

.u-keyboard-grids-item {
	display: flex;
	align-items: center;
	justify-content: center;
}

.u-keyboard-grids-btn {
	text-decoration: none;
	width: 62rpx;
	flex: 0 0 64rpx;
	height: 80rpx;
	display: inline-block;
	font-size: 36rpx;
	text-align: center;
	line-height: 80rpx;
	background-color: #fff;
	margin: 8rpx 5rpx;
	border-radius: 8rpx;
	box-shadow: 0 2rpx 0rpx #888992;
	font-weight: 500;
}

.u-carinput-hover {
	background-color: rgb(185, 188, 195)!important;
}

.u-keyboard-back {
	position: absolute;
	width: 96rpx;
	right: 22rpx;
	bottom: 32rpx;
	height: 80rpx;
	background-color: rgb(185, 188, 195);
	display: flex;
	align-items: center;
	border-radius: 8rpx;
	justify-content: center;
	box-shadow: 0 2rpx 0rpx #888992;
}

.u-keyboard-change {
	font-size: 24rpx;
	box-shadow: 0 2rpx 0rpx #888992;
	position: absolute;
	width: 96rpx;
	left: 22rpx;
	line-height: 1;
	bottom: 32rpx;
	height: 80rpx;
	background-color: #ffffff;
	display: flex;
	align-items: center;
	border-radius: 8rpx;
	justify-content: center;
}

.u-keyboard-change .inactive.zh {
	transform: scale(0.85) translateY(-10rpx);
}

.u-keyboard-change .inactive.en {
	transform: scale(0.85) translateY(10rpx);
}

.u-keyboard-change .active {
	color: rgb(237, 112, 64);
	font-size: 30rpx;
}

.u-keyboard-change .zh {
	transform: translateY(-10rpx);
}

.u-keyboard-change .en {
	transform: translateY(10rpx);
}
</style>
